CN201654313U - Optical path steering gear - Google Patents

Optical path steering gear Download PDF

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Publication number
CN201654313U
CN201654313U CN2010203022616U CN201020302261U CN201654313U CN 201654313 U CN201654313 U CN 201654313U CN 2010203022616 U CN2010203022616 U CN 2010203022616U CN 201020302261 U CN201020302261 U CN 201020302261U CN 201654313 U CN201654313 U CN 201654313U
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China
Prior art keywords
prism
light path
stopper section
light
fixed block
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Expired - Fee Related
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CN2010203022616U
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Chinese (zh)
Inventor
武金阳
唐佩忠
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Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
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Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
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Application filed by Hongfujin Precision Industry Shenzhen Co Ltd, Hon Hai Precision Industry Co Ltd filed Critical Hongfujin Precision Industry Shenzhen Co Ltd
Priority to CN2010203022616U priority Critical patent/CN201654313U/en
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Publication of CN201654313U publication Critical patent/CN201654313U/en
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Abstract

The utility model provides an optical path steering gear, which is fixed inside an image obtaining apparatus. The image obtaining apparatus comprises a lens module group. The optical path steering gear comprises light-in surface and a light-out surface that is vertical to the light-in surface. The optical path steering gear consists in turning the direction of the outside light received via the light-in surface, and projecting vertically the outside light onto the lens module group through the light-out surface, so that the image obtaining apparatus can be reduced in height, thereby enabling the image obtaining apparatus to be installed in a short and small space for receiving images above the short and small space.

Description

Light path redirector
Technical field
The utility model relates to light path redirector, relates in particular to a kind of light path redirector that is used for image acquiring device.
Background technology
(printed circuit board PCB) produces, and to the operation of pcb board, as mounts, detects, and all is that the upper surface at pcb board carries out usually at printed circuit board (PCB).Therefore, corresponding image acquiring device also is arranged in the transmission track top of pcb board.But pcb board bottom surface (back side) also is provided with the image information that some are used for supplement production, for example bar code, numeral, serial number, date, specific pattern etc. usually.If discern these information, just need below the transmission track of pcb board, image acquiring device be set.Yet,, the normal image deriving means can't be installed because the bottom of pcb board transmission track below insufficient space, normal image deriving means is oversize to the length of camera lens.Even install reluctantly, also can exist reference image identification too small, problems such as identification dead angle cause the information that gets access to not easy to identify.
The utility model content
In view of this, the utility model provides a kind of light path redirector that is installed to the image acquiring device in a short and small space.
A kind of light path redirector is fixed in an image acquiring device inside.Described image acquiring device comprises the camera lens module.Described light path redirector comprises that incidence surface reaches and the vertical substantially exiting surface of incidence surface.Described light path redirector receives extraneous light by described incidence surface, makes described extraneous light turn to the back by described exiting surface perpendicular projection described camera lens module extremely.
Preferably, described light path redirector comprises prism and is fixed in the prism fixator on described camera lens module opposite.Described prism fixator offers bayonet socket, and described prism is sticked in the described bayonet socket.
Preferably, described prism fixator surface comprises black material.
Preferably, described prism also comprises reflecting surface, described incidence surface and described exiting surface vertical connection.Described reflecting surface connects described incidence surface and described exiting surface.Described extraneous light enters described prism by described incidence surface, penetrates from described exiting surface in described reflecting surface reflection back.
Preferably, described prism is a total reflection prism.
Preferably, described prism fixator comprises first fixed block.Described first fixed block comprises an inclined-plane.Described inclined-plane is used for pasting mutually to support described prism with the reflecting surface of described prism, makes that the exiting surface of described prism is vertical with the optical axis of described camera lens module.
Preferably, described prism fixator also comprises the second roughly L-shaped fixed block.Described second fixed block comprises that first stopper section reaches and second stopper section of the described first stopper section vertical connection.Described first fixed block also comprises two sides that join with described inclined-plane.The bottom on described inclined-plane is fixed in described first stopper section, and a side in described second stopper section and described two sides offsets.
Preferably, described prism fixator also comprises the 3rd roughly L-shaped fixed block.Described the 3rd fixed block comprises that the 3rd stopper section reaches and the 4th stopper section of described the 3rd stopper section vertical connection.The top on described inclined-plane is fixed in described the 3rd stopper section, and another side in described the 4th stopper section and described two sides offsets.
Above-mentioned light path redirector receives extraneous light, is projected to the camera lens module of image acquiring device after extraneous light is turned to, and makes the whole height of image acquiring device reduce, thereby can be installed to a short and small space to obtain the image of this top, short and small space.
Description of drawings
Fig. 1 is the synoptic diagram of the circuit board detecting system of a better embodiment, and this circuit board detecting system comprises an image acquiring device.
Fig. 2 is the part exploded view of image acquiring device among Fig. 1, and this image acquiring device comprises light source.
Fig. 3 is the another kind of part exploded view of image acquiring device.
Fig. 4 is the exploded view of light source in another embodiment.
Fig. 5 is the synoptic diagram of the circuit board detecting system of another embodiment.
The main element symbol description
Figure G201020302261620100203D000021
Embodiment
Fig. 1 is the synoptic diagram of the circuit board detecting system 100 of a better embodiment.In the present embodiment, circuit board 200 be printed circuit board (PCB) (printed circuit board, PCB).This circuit board detecting system 100 comprises base 10, transmission track 30, drive unit 50 and image acquiring device 80 at least.Wherein, transmission track 30, drive unit 50 and image acquiring device 80 all are fixed in base 10.Drive unit 50 is used to drive transmission track 30.Drive unit 50 is a motor.Transmission track 30 is used for circuit board 200 is sent to another workstation by a workstation, to carry out mounting or detecting of element.Transmission track 30 can be any in the existing transmission track, the flat belt that it can comprise the rail bracket that is fixed in base 10, the synchronous band that drives with the synchromesh gear of drive unit 50 engagements, by synchromesh gear, driven by drive unit 50, guide roller, miniature line slideway etc.Image acquiring device 80 is fixed on the base 10 between the transmission track 30.When circuit board 200 during by regional directly over the image acquiring device 80, but the image information at image acquiring device 80 acquisition cuicuit plates 200 back sides.
As shown in Figure 2, among the embodiment, image acquiring device 80 comprises housing 81 and is fixed in camera lens module 83, image processor 85, light path redirector 87 and light source 89 in the housing 81.Housing 81 comprises roughly rectangular substrate 811 and is fastened on lid 813 on the substrate 811.For collection and the transmission that does not influence light, the inside and outside surface of housing 81 comprises black material, so that this inside and outside surface is black or blackout.
Camera lens module 83 is connected in image processor 85.Camera lens module 83 receives light, and passes to image processor 85 and carry out imaging.Camera lens module 83 can comprise tight shot and zoom lens.Image processor 85 can comprise that CCD (charge-coupleddevice) or CMOS (complementary metal oxide semiconductor) etc. carry out the sensitive chip of opto-electronic conversion, to be embodied as picture.Image processor 85 also can comprise analog to digital converter and image processor, is used to generate the discernible image of computing machine.In the present embodiment, the camera lens module 83 separable image processors 85 that are connected in, both constitute a combination camera, are fixed in substrate 8 11 one ends.Camera lens module 83 can be changed according to applied environment.Image processor 85 profiles are roughly rectangular.For the collection and the transmission that do not influence light, the outside surface of image processor 85 comprises black material, so that this this outside surface is black or blackout.Among other embodiment, image processor 85 and camera lens module 83 can be an integrated camera.
Light path redirector 87 is fixed in the other end of substrate 811, and is relative with camera lens module 83, and near substrate 811 edges.Light path redirector 87 comprises prism 871 and is fixed in the prism fixator 873 of substrate 811.As shown in Figure 3, prism 871 comprise incidence surface 8711, with the exiting surface 8713 of incidence surface 8711 vertical connections, and be connected the reflecting surface 8715 of incidence surface 8711 and exiting surface 8713.In the present embodiment, prism 871 is a total reflection prism, also promptly vertical light from incidence surface 8711 incidents, because its incident angle (45 degree) is greater than the critical angle (42 degree) of prism, it all penetrates from exiting surface 8713 after reflecting surface 8715 reflections, vertically enters camera lens module 83 then.
Prism fixator 873 comprises first fixed block 8731, second fixed block 8732 and the 3rd fixed block 8733.First fixed block 8731 is the regular block that an xsect is the isosceles square substantially.Below for convenience of description, the face at two right-angle side places of isosceles square is called the right angle face of first fixed block 8731, and the face at the waist place of isosceles square is the inclined-plane 8734 of first fixed block 8731, remaining two side that face is first fixed block 8731.Wherein inclined-plane 8734 is used for pasting mutually to support prism 871 with the reflecting surface 8715 of prism 871, makes the incidence surface 8711 of prism 871 be parallel to substrate 811, and exiting surface 8713 is perpendicular to the optical axis (figure does not show) of substrate 811 and camera lens module 83.
Second fixed block 8732 is roughly L-shaped, and it comprises first stopper section 8735 and second stopper section 8736 vertical with first stopper section 8735.The bottom on the inclined-plane 8734 of first fixed block 8731 is fixed in first stopper section 8735.A side of second stopper section 8736 and first fixed block 8731 offsets.
The 3rd fixed block 8733 is also roughly L-shaped, and it comprises the 3rd stopper section 8737 and four stopper section 8738 vertical with the 3rd stopper section 8737.The top on the inclined-plane 8734 of first fixed block 8731 is fixed in the 3rd stopper section 8737.The another side of the 4th stopper section 8738 and first fixed block 8731 offsets.
Thus, first fixed block 8731, second fixed block 8732 cooperate bayonet socket (host cavity) that is used to accommodate prism 871 of formation with the 3rd fixed block 8733.After prism 871 placed in this bayonet socket, reflecting surface 8715 pasted mutually with inclined-plane 8734, and incidence surface 8711 and the 3rd fixed block 8733 offset, and the exiting surface 8713 and second fixed block 8732 offset.And incidence surface 8711 is parallel to substrate 811, and exiting surface 8713 is perpendicular to substrate 811 and be parallel to the incidence surface of camera lens module 83.Light path redirector 87 receives extraneous light by incidence surface 8711, makes described extraneous light turn to the back to pass through exiting surface 8713 perpendicular projection to camera lens module 83.For collection and the transmission that does not influence light, prism fixator 873 surfaces comprise black material, so that prism fixator 873 surfaces are black.Preferably, prism fixator 873 surfaces adopt the anodizing plating to be black.
Light source 89 is fixed on the substrate 811, and is adjacent with light path redirector 87, is used for the regional projection light directly over the incidence surface 8711 of light path redirector 87.In the present embodiment, light source 89 is promptly started working after circuit board detecting system 100 powers on, and closes up to circuit board detecting system 100.Light source 89 comprises two light emitting modules, is fixed in the both sides of light path redirector 87, so that the zone directly over the incidence surface 8711 is subjected to light even.Each light emitting module includes lamp socket 891, be arranged at a plurality of light-emitting components 892 on the lamp socket 891 and be fixed in support 893 on the substrate 811.
Lamp socket 891 is regular hexahedron substantially, its both ends of the surface that parallel 8911 all offer two fixed orifices 894, its upper surface vertical with both ends of the surface 8912 offers a plurality of mounting holes 895 that are used to install light-emitting component 892, and the side 8913 that itself and upper surface join offers a cable hole 896.Cable hole 896 is come round with mounting hole 895, is used to hold the circuit of light-emitting component 892.Two fixed orifices 894 are inequality to the distance of upper surface 8912.
Light-emitting component 892 is that (light emitting diode, LED), the light of its generation is white light to light emitting diode.Among other embodiment, can adopt the LED of the light that produces other colour systems according to actual conditions, for example red-light LED or blue-ray LED.
Support 893 roughly takes the shape of the letter U, and it comprises base plate 8931 and the two side 8932 vertical with base plate 8931.Offer two elongated holes on the base plate 8931, be used for fixing support 893 to substrate 811.Offer (but being not limited to) 5 fixed orifices 8933 on each sidewall 8932.Four fixed orifices in 5 fixed orifices 8933 are that the center of circle distributes with the another one fixed orifice, and these four fixed orifices equal distance between two fixed orifices 894 on the lamp socket 891 to the distance of this another one fixed orifice.Two fixed orifices 894 of lamp socket 891 are fixed to two different fixed orifices 8933 on the sidewall 8932, the direction of scalable light-emitting component 892 throw lights by fixture (as bolt, screw etc.) respectively.
In another embodiment, as shown in Figure 4, offering a fixed orifice 8934 and one on each sidewall 8932 is the arcuate socket 8935 in the center of circle with fixed orifice 8934.Two fixed orifices 894 of lamp socket 891 are fixed to the diverse location of fixed orifice 8934 and arcuate socket 8935 respectively by fixture, can be with the lamp socket 89 1 rotatable supports 893 that are fixed in, to change the direction of light-emitting component 892 throw lights.
Please referring again to Fig. 2 and Fig. 3, lid 813 comprises four sidewalls 8132 that top board 8131 reaches perpendicular to top board 8131.Position corresponding to light path redirector 87 and light source 89 on the top board 8131 offers opening 8133.Opening 8133 is a rectangle, and among other embodiment, opening 8133 can be circle, triangle etc.Offer a plurality of radiating grooves 8134 on two sidewalls 8132 relative, also offer cable hole 8135 on one in these two sidewalls 8132 with the both sides of image processor 85.The circuit of the circuit of light source 89 and image processor 85 can stretch out image acquiring device 80 from cable hole 8135.
When image acquiring device 80 is fixed in base 10, the incidence surface 8711 of light path redirector 87 should be parallel with circuit board 200 back sides on placing transmission track 30, the light that light source 89 sends is from opening 8133 ejaculations and answer specific region, covering board 200 back sides, but this specific region can be printed with identification icon information such as bar code, numeral, serial number, date.When circuit board 200 process image acquiring devices 80 tops, the light that this specific region reflection source 89 sends, light reflected can vertically be injected the incidence surface 8711 of light path redirector 87.This light of injecting turns to the back vertically to inject camera lens module 83 by exiting surface 8713 at reflecting surface 8715, thus but the distinct image of the specific region at image processor 85 generative circuit plates 200 back sides.Understandable, this image is transferred to a disposal system via circuit, and this disposal system is obtained image informations such as above-mentioned font code, numeral, serial number, date from this image.
Owing to adopted light path redirector 87, the whole height of image acquiring device 80 is identical with the thickness (top board 8131 of lid 813 is to the distance of substrate 811) of image processor 85, therefore can be installed to a short and small space.Owing to adopt light source 89 to illuminate circuit board 200 back sides, therefore can get access to circuit board 200 back side distinct image again.In addition, by moving and rotary shell 81, make the different position, incidence surface 8711 face circuit board, 200 back sides of light path redirector 87, exiting surface 8713 can reduce the dead angle of finding a view towards different directions.Also can be according to the prism 871 and the camera lens module 83 of the different choice different size of viewfinder range, install and debugging all very convenient.
In other embodiments, can be according to a plurality of image acquiring devices 80 of how much being provided with of the image that will obtain.As shown in Figure 5, compare, comprise two image acquiring devices 80,80 ' that structure is identical on the base 10 of circuit board detecting system 300 with circuit board detecting system 100.These two image acquiring devices 80,80 ' are respectively applied for the middle part at acquisition cuicuit plate 200 back sides and the image of lateral edges.Wherein, the direction of transfer vertical (optical axis of the camera lens module of image acquiring device 80 is parallel with the direction of transfer of circuit board 200) of the optical axis of the camera lens module of image acquiring device 80 ' (figure do not show) and circuit board 200, light path redirector is provided with near transmission track 30, therefore image that can acquisition cuicuit plate 200 edges, thus realize that no dead angle finds a view.
Those skilled in the art will be appreciated that; above embodiment only is to be used for illustrating the utility model; and be not to be used as qualification of the present utility model; as long as within connotation scope of the present utility model, appropriate change and variation that above embodiment is done all drop within the claimed scope of the utility model.

Claims (8)

1. light path redirector, it is characterized in that, described light path redirector is fixed in an image acquiring device inside, described image acquiring device comprises the camera lens module, described light path redirector comprises that incidence surface reaches and the vertical substantially exiting surface of incidence surface, described light path redirector receives extraneous light by described incidence surface, makes described extraneous light turn to the back by described exiting surface perpendicular projection described camera lens module extremely.
2. light path redirector as claimed in claim 1 is characterized in that, described light path redirector comprises prism and be fixed in the prism fixator on described camera lens module opposite, and described prism fixator offers bayonet socket, and described prism is sticked in the described bayonet socket.
3. light path redirector as claimed in claim 2 is characterized in that, described prism fixator surface comprises black material.
4. light path redirector as claimed in claim 2, it is characterized in that, described prism also comprises reflecting surface, described incidence surface and described exiting surface vertical connection, described reflecting surface connects described incidence surface and described exiting surface, described extraneous light enters described prism by described incidence surface, penetrates from described exiting surface in described reflecting surface reflection back.
5. light path redirector as claimed in claim 4 is characterized in that, described prism is a total reflection prism.
6. light path redirector as claimed in claim 4, it is characterized in that, described prism fixator comprises first fixed block, described first fixed block comprises an inclined-plane, described inclined-plane is used for pasting mutually to support described prism with the reflecting surface of described prism, makes that the exiting surface of described prism is vertical with the optical axis of described camera lens module.
7. light path redirector as claimed in claim 6, it is characterized in that, described prism fixator also comprises the second roughly L-shaped fixed block, described second fixed block comprises that first stopper section reaches and second stopper section of the described first stopper section vertical connection, described first fixed block also comprises two sides that join with described inclined-plane, the bottom on described inclined-plane is fixed in described first stopper section, and a side in described second stopper section and described two sides offsets.
8. light path redirector as claimed in claim 7, it is characterized in that, described prism fixator also comprises the 3rd roughly L-shaped fixed block, described the 3rd fixed block comprises that the 3rd stopper section reaches and the 4th stopper section of described the 3rd stopper section vertical connection, the top on described inclined-plane is fixed in described the 3rd stopper section, and another side in described the 4th stopper section and described two sides offsets.
CN2010203022616U 2010-02-03 2010-02-03 Optical path steering gear Expired - Fee Related CN201654313U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107517285A (en) * 2016-06-17 2017-12-26 宁波舜宇光电信息有限公司 Split type latent prestige module and its assemble method and application

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107517285A (en) * 2016-06-17 2017-12-26 宁波舜宇光电信息有限公司 Split type latent prestige module and its assemble method and application

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C17 Cessation of patent right
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Granted publication date: 20101124

Termination date: 20120203